The set will include 3 each of the keyed titanium washers, and 3 each of the eared titanium washers, and 4 each 0.7mm carbon fiber drag washers. The stack will only use 5 of the metal washers, so the user will have the choice of the keyed or the eared washers on both the top and bottom of the stack. 5 metal washers and 4 carbon fiber washers puts the nominal stack height at 0.267".